Articles on: Minecraft

How to Set a Custom World Seed on Your Minecraft Server

**A Minecraft seed is a specific string of numbers (or text) that determines how your world is generated – terrain features and biomes to village placements and cave systems. Setting a custom seed gives you control over what kind of world your players spawn into, whether you’re aiming for scenic landscapes, survival islands, or challenge-style terrain.

Changing the seed is easy to do before world generation, but it must be done before your world is created. If your world already exists, you’ll need to delete or rename it before applying the new seed.

If you don’t delete or rename the existing world, Minecraft will ignore the new seed.

You can test seeds in single-player first to preview them before committing to one on your server.

Step 1: Choose Your Seed

You can use a random number, a word, or phrase. Minecraft automatically converts it into a numerical seed. The phrasing will have no impact on the structures or biomes.

Numeric: 123456789

Text-based: SurvivalIsland

If you’re not sure what seed to use, you’re in luck. There are tons of YouTube videos and even a Reddit page devoted to Minecraft seeds where players showcase incredible seeds they’ve discovered. If you copy and use a seed, you’ll get the exact same world as it was originally generated (no player made changes will transfer).

Step 2: Log in

Step 3: Select the Server

Once on the dashboard, find and select your intended Minecraft server.

Step 4: Stop the Server

Before making any changes, stop the server to avoid potential data issues. On the Terminal **page, click the red **Stop button.

Step 5: Delete or Rename the Existing World Folder

Select Files from the sidebar and look for the folder named world (or whatever your level name is set to). You can either:

Delete the folder to start fresh

Rename it (e.g., world-old) if you want to keep a backup

Step 6: Set the New Seed in server.properties

Now click on the server.properties file. Fine the line level-seed=. Enter your custom seed after the equals sign:

level-seed=123456789

Then click **Save Content **when you’re done.

Step 7: Restart the Server

You can now restart your server, clicking the green Start button on the Terminal page.

Updated on: 05/05/2025

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